Gregor Joseph Dudiak, DO
Internal Medicine Physician · Hershey, PA
Gregor Joseph Dudiak, DO is an internal medicine physician with a practice address in Hershey, Pennsylvania, and NPI 1669222667, issued on Mar 25, 2024. Check the license on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Gregor Joseph Dudiak
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- Practice location
- 500 University Dr, Hershey, PA 17033
- Phone
- (717) 531-6597
- Enumerated
- Mar 25, 2024
- Record last updated
- Mar 25, 2024
- Fax
- (717) 531-7790
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
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Verify Gregor Joseph Dudiak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)Check the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
20 Medicare Part D claims for 11 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Gregor Joseph Dudiak among 7,300 internal medicine physician records in Pennsylvania
Gregor Joseph Dudiak, DO is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 93% of them.
- NPI issued2024 · 93% of these records are older, 5% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2024 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
124 internal medicine physician records list a practice address in Hershey
They are 124 of the 3,972 NPPES records with a practice address in Hershey, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Hershey → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Andreas Achilleos, M.D.Hershey, PA 170331790749059
- Ayesha Ahmad, MDHershey, PA 170331558347757
- Edward Bollard, MDHershey, PA 170331942259957
- Cynthia Chuang, MDHershey, PA 170331386693216
- John Crawshaw, MDHershey, PA 170331598720823
- Hy Depamphilis, MDHershey, PA 170331609879691
- Inginia Genao, MDHershey, PA 170331417938291
- Stephen Henderson, M.D.Hershey, PA 170331669479424
Common questions
What is Gregor Joseph Dudiak, DO's NPI number?
Gregor Joseph Dudiak, DO's National Provider Identifier (NPI) is 1669222667, issued on Mar 25, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Gregor Joseph Dudiak, DO located?
The NPPES record lists a practice address at 500 University Dr, Hershey, PA, 17033. Phone: (717) 531-6597. Providers update this record themselves, so call before visiting.
How can I verify Gregor Joseph Dudiak, DO's license?
Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregor Joseph Dudiak, DO prescribe under Medicare Part D?
In 2024, Gregor Joseph Dudiak, DO had 20 Medicare Part D claims for 11 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.